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ASPN · Aspen Aerogels Inc · Fails to Deliver

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$5.56 +0.08 (+1.46%) At close · Oct 1
Russell 2000 member Rebalance outlook locked
Market Cap
$431.54M
Shares
82.99M
Volume · Oct 1 1.07M Avg daily vol (3M) 1.16M

Fails to deliver — shares from a trade that were not delivered to the buyer by the settlement date — published by the SEC twice a month. Persistent fails can reflect settlement problems or naked short selling.

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1M 3M 6M 1Y 5Y All

Fails to Deliver History

Settlement Date Quantity Price Value
2026-09-14 962 $4.91 $4,723
2026-08-11 198 $6.29 $1,245
2026-08-07 18,393 $6.89 $126,728
2026-08-06 4,378 $5.01 $21,934
2026-08-05 25,802 $5.06 $130,558
2026-08-03 1,552 $4.63 $7,186
Showing 1–6 of 6 settlements
Key facts CIK 1145986 CUSIP 04523Y105 13F (30d) 4 filings 4 filers Visit website Investor relations